12125537 has 4 divisors (see below), whose sum is σ = 12183216. Its totient is φ = 12067860.

The previous prime is 12125521. The next prime is 12125543. The reversal of 12125537 is 73552121.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4, and also an emirpimes, since its reverse is a distinct semiprime: 73552121 = 107 ⋅687403.

It is a cyclic number.

It is not a de Polignac number, because 12125537 - 2⁴ = 12125521 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (12125587) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 28523 + ... + 28944.

It is an arithmetic number, because the mean of its divisors is an integer number (3045804).

Almost surely, 2^12125537 is an apocalyptic number.

It is an amenable number.

12125537 is a deficient number, since it is larger than the sum of its proper divisors (57679).

12125537 is an equidigital number, since it uses as much as digits as its factorization.

12125537 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 57678.

The product of its digits is 2100, while the sum is 26.

The square root of 12125537 is about 3482.1741771485. The cubic root of 12125537 is about 229.7384361127.

Adding to 12125537 its reverse (73552121), we get a palindrome (85677658).

The spelling of 12125537 in words is "twelve million, one hundred twenty-five thousand, five hundred thirty-seven".